口算.
|
(1)270 ×2= |
(2)40 ×6= |
(3)44 ×20= |
|
41 ×3= |
32 ×20= |
10 ×23= |
|
33 ×3= |
24 ×40= |
3 ×31= |
|
18 ×20= |
15 ×50= |
9 ×10= |
口算.
|
(1)16 ×2= |
(2)120 ×3= |
(3)200 ×4= |
|
(4)18 ×5= |
(5)160 ×5= |
(6)300 ×3= |
|
(7)20 ×6= |
(8)150 ×7= |
(9)270 ×2= |